<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-alert title="添加商品信息"
                  type="info"
                  center
                  show-icon
                  :closable="false">
        </el-alert>
      </el-row>
      <!-- 步骤 -->
      <el-steps :space="200"
                :active="activeIndex-0"
                align-center
                finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tabs -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="100px"
               label-position="top">
        <el-tabs v-model="activeIndex"
                 :tab-position="'left'"
                 :before-leave="berforeTab"
                 @tab-click="tabsClick">
          <el-tab-pane label="基本信息"
                       name="0">
            <el-form-item label="商品名称"
                          prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格"
                          prop="goods_price">
              <el-input v-model="addForm.goods_price"
                        type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量"
                          prop="goods_weight">
              <el-input v-model="addForm.goods_weight"
                        type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量"
                          prop="goods_number">
              <el-input v-model="addForm.goods_number"
                        type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类"
                          prop="goods_cat">
              <el-cascader v-model="addForm.goods_cat"
                           :options="cateList"
                           expand_trigger='hover'
                           :props="cateProps"
                           @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数"
                       name="1">
            <el-form-item v-for="item in manyTabsData"
                          :key="item.attr_id"
                          :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox v-for="(ckItem,ckItemindex) in item.attr_vals"
                             :key="ckItemindex"
                             :label="ckItem"
                             border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性"
                       name="2">
            <el-form-item v-for="item in onlyTabsData"
                          :label="item.attr_name"
                          :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片"
                       name="3">
            <el-upload :action="uploadURL"
                       :on-preview="handlePreview"
                       :on-remove="handleRemove"
                       :headers="headerObj"
                       :on-success="uploadSuccess"
                       list-type="picture">
              <el-button size="small"
                         type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容"
                       name="4">
                       <quill-editor v-model="addForm.goods_introduce">

                       </quill-editor>
                       <el-button type="primary" class="addBtn" @click="add">添加商品</el-button>
            </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog title="图片预览"
               :visible.sync="previewPathVisible"
               width="35%">
               <img :src="previewPath" alt="图片" class="img-dialog">
    </el-dialog>
  </div>
</template>
<script>
import _ from "lodash" 
export default {
  data() {
    return {
      activeIndex: 0,
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce:"",
        attrs:[]
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' },
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' },
        ],
      },
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      manyTabsData: [],
      onlyTabsData: [],
      uploadURL: 'https://www.liulongbin.top:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      previewPath: '',
      previewPathVisible:false
    }
  },
  created() {
    this.getCateList()
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
  methods: {
    //商品分类
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.cateList = res.data
      console.log(JSON.stringify(this.cateList))
    },
    handleChange() {
      console.log(this.addForm.goods_cat)
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = []
      }
    },
    berforeTab(activeName, oldActionName) {
      //  console.log("activeName:"+activeName);
      //  console.log("oldActionName："+oldActionName);
      if (oldActionName === '0' && this.addForm.goods_cat.length != 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    async tabsClick() {
      //  console.log(this.activeIndex);
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        }

        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : []
        })

        this.manyTabsData = res.data
        console.log(JSON.stringify(res.data))
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error(res.meta.msg)
        }
        res.data.forEach((item) => {
          item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : []
        })

        this.onlyTabsData = res.data
        console.log(JSON.stringify(res.data))
      }
    },
    //处理图片预览效果
    handlePreview(file) {
      console.log('file:' + file)
      this.previewPath = file.response.data.url
      this.previewPathVisible=true
    },
    //处理图片移除操作
    handleRemove(file) {
      console.log(file)
      //1.找到删除的图片路径
      const filePath = file.response.data.tmp_path
      //2.在pics 数据中，找到这个图片对应的索引值
      const fileindex = this.addForm.pics.indexOf((x) => x.pic === filePath)
      //3.找图片路径， splice 删除
      this.addForm.pics.splice(fileindex, 1)
      console.log('addForm:' + JSON.stringify(this.addForm))
    },
    uploadSuccess(response, file, fileList) {
      console.log(JSON.stringify(response))
      const picsInfo = {
        pic: response.data.tmp_path,
      }
      this.addForm.pics.push(picsInfo)
      console.log(this.addForm)
    },
    add(){
       console.log("add:"+JSON.stringify(this.addForm));
       this.$refs.addFormRef.validate(async valid =>{
          if(!valid){
             return this.$message.error("请填写表单必填项")
          }
          const form = _.cloneDeep(this.addForm)
          form.goods_cat=form.goods_cat.join(",")
   
          //处理动态参数
         this.manyTabsData.forEach(item =>{
            const newInfo = {
               attr_id:item.attr_id,
               attr_vals:item.attr_vals.join(" ")
            }
            this.addForm.attrs.push(newInfo)
         })
          //处理静态属性
          this.onlyTabsData.forEach(item =>{
             const newinfo = {
                attr_id:item.attr_id,
               attr_vals:item.attr_vals
             }
             this.addForm.attrs.push(newinfo)
          })
         // 赋值给 form
         form.attrs = this.addForm.attrs
         console.log(form);

         const {data:res} = await this.$http.post("goods",form)
         if(res.meta.status !==201){
            return this.$message.error(res.meta.msg)
         }
         this.$message.success(res.meta.msg)
         this.$router.push("/goods")



       })
    }
  },
}
</script>
<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.img-dialog{
   width: 100%;
}
.addBtn{
   margin-top: 15px;
}
</style>